lly heater

[nspence]

So I did head gaskets on my lly now wen you turn the heat on it blows warm for a few mins then goes cool then blows warm again . Any ideas what could be causing this . And there is also no air bubbles coming from my coolent tank

 

[Chris Tobin]

air trapped in cooling system... or probs with thermostats... what is the temp gauge of the truck showing? is it fluctuation too?

 

[nspence]

Temp is at 190 then when i get on it the temp goes to 210 then drops back down to 190

 

[Chris Tobin]

did you put both thermostats in?

 

[nspence]

Yes I did I got 2 brand new ones in it I think im going to try and bleed the cooling system after work see if that works